Official Rules

You may use this bookmark in any game of Munchkin or its sequels, or Munchkin Quest. It may be used at any time when you are in combat. You may only use one bookmark (of any kind) per game unless you change sex. If you change sex, you may use a second bookmark. You may not use more than two in a game, no matter what.

Show everyone the bookmark so they can satisfy themselves that it is what you say it is.